Language

English 48.1%, Chinese 39.6%, Japanese 3.9%

Dictionary

Ooi in Hokkien (one of the Chinese dialects) means the color yellow. As directly translated from their original Mandarin sir name 黄 (huang=yellow), Ooi become their sir name in English names. The same theory applies to sir name Ng. Among the Hokkiens, the word 黄 can be pronounced as Ooi or Ng, the reason of difference remains unknown to me. (Yoong Meng Ooi)